feat: Auto-prepend 'v' to version numbers during pixi installation

[m-naumann]

Trying to install v0.40.2 using curl -fsSL https://pixi.sh/install.sh | PIXI_VERSION=0.40.2 bash results in

This script will automatically download and install Pixi (0.40.2) for you.
Getting it from this url: https://github.com/prefix-dev/pixi/releases/download/0.40.2/pixi-x86_64-unknown-linux-musl.tar.gz
error: 'https://github.com/prefix-dev/pixi/releases/download/0.40.2/pixi-x86_64-unknown-linux-musl.tar.gz' is not available

which confused me for a second. I hope this auto-prepending the missing v makes it smoother. Let me know what you think.

[ruben-arts]

I think this would be helpful 👍 Could you also do it for the ps1 script in install/install.ps1 ?

[RaphaelMelanconAtBentley]

This message seems unnecessary to me. As you said, this behavior of needing a 'v' is somewhat confusing. So not putting a 'v' should not be considered user error.

[m-naumann]

No strong opinion from my side. Should I remove it?

[ruben-arts]

Yeah removing it seems fine to me. It's not really important for the user to know this so it would just be extra overhead of reading it.

[m-naumann]

okay, done

[m-naumann]

I think this would be helpful 👍 Could you also do it for the ps1 script in install/install.ps1 ?

done in 52dad19

[ruben-arts]

Thank you!